CN110896955B - Insecticidal composition for preventing and treating lepidoptera pests - Google Patents
Insecticidal composition for preventing and treating lepidoptera pests Download PDFInfo
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- CN110896955B CN110896955B CN201911023560.8A CN201911023560A CN110896955B CN 110896955 B CN110896955 B CN 110896955B CN 201911023560 A CN201911023560 A CN 201911023560A CN 110896955 B CN110896955 B CN 110896955B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N41/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom
- A01N41/02—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom containing a sulfur-to-oxygen double bond
- A01N41/10—Sulfones; Sulfoxides
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/56—1,2-Diazoles; Hydrogenated 1,2-diazoles
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N63/00—Biocides, pest repellants or attractants, or plant growth regulators containing microorganisms, viruses, microbial fungi, animals or substances produced by, or obtained from, microorganisms, viruses, microbial fungi or animals, e.g. enzymes or fermentates
Abstract
The invention relates to an insecticidal composition for preventing and treating lepidoptera pests, and belongs to the technical field of pesticides. The composition comprises effective amounts of two effective components of a component A and a component B, wherein the component A is emamectin benzoate B2a, and the component B is selected from one of chlorantraniliprole, flubendiamide and cyantraniliprole; the mass part ratio of the component A to the component B is 50: 1-1: 50. The invention relates to an insecticidal composition for preventing and treating lepidoptera pests, which is prepared by compounding emamectin benzoate B2a with one of chlorantraniliprole, flubendiamide and cyantraniliprole respectively, and has obvious synergistic effect on the preventing effect of the lepidoptera pests.
Description
Technical Field
The invention relates to an insecticidal composition for preventing and treating lepidoptera pests, and belongs to the technical field of pesticides.
Background
Chinese patent CN201310063563.0 discloses a method for synthesizing avermectin B2a/2B amine derivatives and derivative salts using avermectin B2 as a parent, wherein a compound of methylamino avermectin B2a benzoate and a preparation method thereof are disclosed, and then the applicant firstly and formally obtains a name in China, and simultaneously, develops more researches on the application of methylamino avermectin B2a benzoate.
At present, in the field of preventing and controlling lepidoptera pests, emamectin benzoate is respectively compounded with chlorantraniliprole, flubendiamide and cyantraniliprole for use, but the research on compounding the emamectin B2a benzoate with the chlorantraniliprole, the flubendiamide and the cyantraniliprole is not provided.
In addition, the common mode application of shrimp and rice in China is more and more common at present, and abamectin and emamectin benzoate insecticides are generally high in toxicity to lobsters, so that the application of the lobsters is severely limited.
Disclosure of Invention
The invention aims to provide an insecticidal composition for preventing and controlling lepidoptera pests.
In order to achieve the purpose, the invention adopts the technical scheme that:
an insecticidal composition for preventing and treating lepidoptera pests comprises effective amounts of two effective components of a component A and a component B, wherein the component A is emamectin benzoate B2a benzoate, and the component B is selected from one of chlorantraniliprole, flubendiamide and cyantraniliprole; the mass part ratio of the component A to the component B is 50: 1-1: 50.
The technical scheme of the invention is further improved as follows: the total mass of the component A and the component B in the pesticide is 1-80%.
The technical scheme of the invention is further improved as follows: the pesticide composition can be prepared into water suspending agent and water dispersible granule.
The technical scheme of the invention is further improved as follows: the insecticidal composition is used for preventing and controlling lepidoptera pests.
The technical scheme of the invention is further improved as follows: the effective components are emamectin benzoate B2a benzoate and chlorantraniliprole, and the pesticide is a suspending agent containing bifidobacterium.
The technical scheme of the invention is further improved as follows: the mass ratio of the bifidobacteria to the effective components is not more than 0.5%.
The technical scheme of the invention is further improved as follows: the insecticidal composition is used for preventing and controlling lepidoptera pests in a shrimp paddy field.
Due to the adoption of the technical scheme, the invention has the following technical effects:
the invention relates to an insecticidal composition for preventing and treating lepidoptera pests, which is prepared by compounding emamectin benzoate B2a with chlorantraniliprole, flubendiamide and cyantraniliprole respectively.
The insecticidal composition provided by the invention is prepared by adding bifidobacterium into a compound suspending agent of emamectin benzoate B2a benzoate and chlorantraniliprole, the toxicity of the preparation to lobsters is almost eliminated, the pesticide effect to chilo suppressalis is enhanced, and the insecticidal composition is particularly suitable for pest control work of rice fields in a shrimp and rice co-culture mode.
Detailed Description
The present invention will be described in further detail with reference to specific examples below:
the present invention will be described in further detail with reference to examples for the purpose of further disclosure and not limitation, but the present invention is by no means limited to these examples. The following description is only a preferred embodiment of the present invention, and is only for the purpose of explaining the present invention, but not to be construed as limiting the scope of the present invention. It should be understood that any modification, equivalent replacement or improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention, and therefore, the protection scope of the present invention shall be subject to the appended claims.
The invention discloses an insecticidal composition for preventing and treating lepidoptera pests, which is prepared by compounding emamectin benzoate B2a with chlorantraniliprole, flubendiamide and cyantraniliprole respectively, and has obvious synergistic effect on the prevention effect of the lepidoptera pests.
An insecticidal composition for preventing and treating lepidoptera pests comprises effective amounts of two effective components of a component A and a component B, wherein the component A is emamectin benzoate B2a benzoate, and the component B is selected from one of chlorantraniliprole, flubendiamide and cyantraniliprole; the mass part ratio of the component A to the component B is 50: 1-1: 50.
The insecticidal composition is further defined in that the total mass of the component A and the component B in the pesticide is 1-80%.
The pesticide composition can be prepared into water suspending agent and water dispersible granule.
The insecticidal composition is mainly used for preventing and controlling lepidoptera pests.
When the effective components in the insecticidal composition are emamectin benzoate B2a benzoate and chlorantraniliprole, the pesticide dosage form is prepared into a suspending agent, and bifidobacteria is added into the suspending agent. In this case, the insecticidal composition can be used for controlling and preventing lepidoptera pests in a shrimp paddy field, and the toxicity to the pests is almost eliminated while the toxicity to the lobsters is ensured. Specifically, the mass ratio of the bifidobacteria to the effective components is controlled to be not more than 0.5%.
In the present invention, emamectin benzoate B2a is used instead of emamectin benzoate. The invention also takes the emamectin benzoate B2a as the component A, and redesigns and limits the proportion of the component A and the component B, so that the emamectin benzoate B2a and the component B can fully exert the drug effect in a reasonable range.
The following are specific examples:
first, preparation examples
Formulation example 1:
5% of emamectin benzoate B2a benzoate chlorantraniliprole suspending agent.
Is prepared according to the mass percentage of the emamectin benzoate B2a to the chlorantraniliprole of 10: 1. 4.55 percent of abamectin B2a raw drug, 0.45 percent of chlorantraniliprole raw drug, 1 percent of wetting agent hydroxyl polyethylene oxide block copolymer, 4 percent of dispersing agent naphthalenesulfonic acid formaldehyde condensate sodium salt, 5 percent of antifreezing agent ethylene glycol, 1 percent of thickening agent magnesium aluminum silicate, 0.2 percent of thickening agent xanthan gum, 0.2 percent of defoaming agent organic silicon and 100 percent of deionized water. After being mixed evenly, the mixture is ground by a sand mill to obtain the 5 percent of emamectin benzoate B2a benzoate chlorantraniliprole suspending agent.
Chlorantraniliprole can also be replaced by flubendiamide or cyantraniliprole to form a new embodiment.
Formulation example 2:
20% emamectin benzoate B2a flubendiamide suspension
Is prepared according to the mass percentage of 5:1 of methylamino abamectin B2a benzoate to flubendiamide. 16.67 percent of methylamino abamectin B2a benzoate technical, 3.33 percent of flubendiamide technical, 1 percent of wetting agent hydroxyl polyethylene oxide block copolymer, 4 percent of dispersant polycarboxylate, 5 percent of antifreeze glycol, 1 percent of thickener magnesium aluminum silicate, 0.2 percent of thickener xanthan gum, 0.2 percent of defoamer organic silicon and deionized water to be supplemented to 100 percent. After being mixed evenly, the mixture is ground by a sand mill to obtain the 20 percent of emamectin benzoate B2a benzoate-flubendiamide suspending agent.
The flubendiamide can also be replaced by chlorantraniliprole or cyantraniliprole to form a new embodiment.
Formulation example 3:
35% of emamectin benzoate B2 a-cyantraniliprole suspending agent.
Is prepared according to the mass percentage of 1:1 of emamectin benzoate B2a benzoate to cyantraniliprole. 17.5 percent of methylamino abamectin B2a benzoate technical, 17.5 percent of flubendiamide technical, 1 percent of wetting agent hydroxy polyethylene oxide block copolymer, 6 percent of dispersant sodium lignosulfonate, 5 percent of antifreeze urea, 1 percent of thickener magnesium aluminum silicate, 0.2 percent of thickener xanthan gum, 0.2 percent of defoamer organic silicon and deionized water to supplement to 100 percent. After being mixed evenly, the mixture is ground by a sand mill to obtain the suspending agent of 35 percent of emamectin benzoate B2a benzoate and cyantraniliprole.
Cyantraniliprole can also be replaced by chlorantraniliprole or flubendiamide, forming a new embodiment.
Formulation example 4:
50% of emamectin benzoate B2a benzoate-chlorantraniliprole water dispersible granules.
Is prepared according to the mass percentage of the emamectin benzoate B2a to the chlorantraniliprole of 1: 5. 8.33 percent of methylamino abamectin B2a benzoate, 41.67 percent of chlorantraniliprole, 1 percent of mixture of wetting agent alkyl naphthalene sulfonate and anion wetting agent, 5 percent of dispersant sodium lignosulfonate, 8 percent of disintegrant urea and the carrier bentonite are weighed and supplemented. The materials are fully and uniformly mixed, and are boiled, granulated and dried to prepare the 50 percent emamectin benzoate B2a benzoate-chlorantraniliprole water dispersible granule.
Chlorantraniliprole can also be replaced by flubendiamide or cyantraniliprole to form a new embodiment.
Formulation example 5:
70% of emamectin benzoate B2a benzoate-chlorantraniliprole water dispersible granules.
Is prepared according to the mass percentage of the emamectin benzoate B2a to the chlorantraniliprole of 1: 10. 6.36 percent of emamectin benzoate B2a, 63.64 percent of chlorantraniliprole, 2 percent of wetting agent hydroxyl polyethylene oxide block copolymer, 5 percent of dispersant sodium lignosulfonate, 8 percent of disintegrant urea and corn starch as a carrier are weighed and supplemented. The materials are fully and uniformly mixed, and are boiled, granulated and dried to prepare the 70 percent emamectin benzoate B2a benzoate-chlorantraniliprole water dispersible granule.
Chlorantraniliprole can also be replaced by flubendiamide or cyantraniliprole to form a new embodiment.
Second, comparative example
Comparative example 1:
20% of emamectin benzoate B2a benzoate chlorantraniliprole suspending agent.
Is prepared according to the mass percentage of the emamectin benzoate B2a to the chlorantraniliprole of 5: 1. 16.67 percent of emamectin benzoate B2a raw drug, 3.33 percent of chlorantraniliprole raw drug, 1 percent of wetting agent hydroxyl polyethylene oxide block copolymer, 4 percent of dispersing agent polycarboxylate, 5 percent of antifreeze glycol, 1 percent of thickening agent magnesium aluminum silicate, 0.2 percent of thickening agent xanthan gum, 0.2 percent of defoaming agent organic silicon, 0.05 percent of bifidobacterium and 100 percent of deionized water are taken for supplement. After being mixed evenly, the mixture is ground by a sand mill to obtain the suspending agent of 20 percent of emamectin benzoate B2a benzoate chlorantraniliprole.
Comparative example 2:
20% of emamectin benzoate B2a benzoate chlorantraniliprole suspending agent.
Is prepared according to the mass percentage of the emamectin benzoate B2a to the chlorantraniliprole of 1: 1. Taking 10% of emamectin benzoate B2a technical, 10% of chlorantraniliprole technical, 1% of wetting agent hydroxy polyethylene oxide block copolymer, 4% of dispersant polycarboxylate, 5% of antifreeze glycol, 1% of thickener magnesium aluminum silicate, 0.2% of thickener xanthan gum, 0.2% of defoamer organic silicon, 0.10% of bifidobacterium and 100% of deionized water. After being mixed evenly, the mixture is ground by a sand mill to obtain the suspending agent of 20 percent of emamectin benzoate B2a benzoate chlorantraniliprole.
Comparative example 3:
20% of emamectin benzoate B2a benzoate chlorantraniliprole suspending agent.
Is prepared according to the mass percentage of the emamectin benzoate B2a to the chlorantraniliprole of 1: 5. 3.33 percent of emamectin benzoate B2a, 16.67 percent of chlorantraniliprole, 1 percent of wetting agent hydroxyl polyethylene oxide block copolymer, 4 percent of dispersant polycarboxylate, 5 percent of antifreeze glycol, 1 percent of thickening agent magnesium aluminum silicate, 0.2 percent of thickening agent xanthan gum, 0.2 percent of defoaming agent organic silicon, 0.15 percent of bifidobacterium and 100 percent of deionized water are taken to supplement. After being mixed evenly, the mixture is ground by a sand mill to obtain the suspending agent of 20 percent of emamectin benzoate B2a benzoate chlorantraniliprole.
Comparative example 4:
20% of emamectin benzoate B2a benzoate chlorantraniliprole suspending agent.
Is prepared according to the mass percentage of the emamectin benzoate B2a to the chlorantraniliprole of 1: 10. 1.8 percent of abamectin B2a raw drug, 18.2 percent of chlorantraniliprole raw drug, 2 percent of wetting agent hydroxyl polyethylene oxide block copolymer, 6 percent of dispersing agent naphthalenesulfonic acid formaldehyde condensate sodium salt, 5 percent of antifreezing agent ethylene glycol, 1 percent of thickening agent magnesium aluminum silicate, 0.2 percent of thickening agent xanthan gum, 0.2 percent of defoaming agent organic silicon, 0.05 percent of bifidobacterium and deionized water are added to 100 percent. After being mixed evenly, the mixture is ground by a sand mill to obtain the suspending agent of 20 percent of emamectin benzoate B2a benzoate chlorantraniliprole.
Comparative example 5:
20% of emamectin benzoate B2a benzoate chlorantraniliprole suspending agent.
Is prepared according to the mass percentage of the emamectin benzoate B2a to the chlorantraniliprole of 10: 1. 18.2 percent of emamectin benzoate B2a, 1.8 percent of chlorantraniliprole, 1 percent of wetting agent hydroxy polyethylene oxide block copolymer, 5 percent of dispersant sodium lignosulfonate, 5 percent of antifreeze urea, 1 percent of thickener magnesium aluminum silicate, 0.2 percent of thickener xanthan gum, 0.2 percent of defoamer organic silicon, 0.1 percent of bifidobacterium and 100 percent of deionized water are taken for supplement. After being mixed evenly, the mixture is ground by a sand mill to obtain the suspending agent of 20 percent of emamectin benzoate B2a benzoate chlorantraniliprole.
Comparative example 6:
20% of emamectin benzoate B2a benzoate chlorantraniliprole suspending agent.
Is prepared according to the mass percentage of the emamectin benzoate B2a to the chlorantraniliprole of 5: 1. 16.67 percent of emamectin benzoate B2a raw drug, 3.33 percent of chlorantraniliprole raw drug, 1 percent of wetting agent hydroxyl polyethylene oxide block copolymer, 4 percent of dispersing agent polycarboxylate, 5 percent of antifreeze glycol, 1 percent of thickening agent magnesium aluminum silicate, 0.2 percent of thickening agent xanthan gum, 0.2 percent of defoaming agent organic silicon, 0.15 percent of bifidobacterium and 100 percent of deionized water are taken for supplement. After being mixed evenly, the mixture is ground by a sand mill to obtain the suspending agent of 20 percent of emamectin benzoate B2a benzoate chlorantraniliprole.
Comparative example 7:
5% emamectin benzoate B2a suspension.
5% of methylamino abamectin B2a benzoate technical product, 1% of wetting agent hydroxy polyethylene oxide block copolymer, 4% of dispersant polycarboxylate, 5% of antifreeze glycol, 1% of thickener magnesium aluminum silicate, 0.2% of thickener xanthan gum, 0.2% of defoamer organic silicon, 0.02% of bifidobacterium and 100% of deionized water are taken to be supplemented. Grinding the mixture by a sand mill after uniform mixing to obtain the 5 percent methylamino abamectin B2a benzoate suspending agent.
Second, determination of biological Activity
In order to further understand the toxicity of the combination of the abamectin B2a and the clothianidin on crop pests, a large number of component proportion screening experiments are carried out.
According to the Sun Yunpei method, the synergistic effect of the mixed medicaments is evaluated according to the co-toxicity coefficient (CTC), namely the CTC is less than or equal to 80 and is a synergistic antagonistic effect, the CTC is less than 80 and is less than 120 and is a synergistic effect, and the CTC is more than or equal to 120. Measured virulence index (ATI) ═ (EC 50 for standard agents/EC 50 for test agents) x 100; the theoretical virulence index TTI is the virulence index of the A medicament multiplied by the percentage of the A medicament in the mixed preparation plus the virulence index of the B medicament multiplied by the percentage of the B medicament in the mixed preparation; co-toxicity coefficient (CTC) × 100 [ measured toxicity index (ATI) of the mixture)/Theoretical Toxicity Index (TTI) of the mixture ].
Efficacy example 1: chilo suppressalis indoor combined toxicity determination
The toxicity of the chilo suppressalis is measured by adopting a seedling dipping method. Soaking 10 rice seedlings (5-6 cm high) in liquid medicines with different mass concentrations for 15s, airing, placing in a test tube (1.5cm x 15cm), inoculating chilo suppressalis 2-instar middle-stage larvae (15 heads/tube), and placing in an observation room. The control was treated with clear water. Treatment was repeated 4 times per concentration and the results were investigated after 5 days.
TABLE 1 indoor toxicity assay results for Chilo suppressalis
Wherein: a is emamectin benzoate B2a benzoate, and B is chlorantraniliprole.
The results of the combined toxicity test in the table 1 show that the emamectin benzoate B2a and chlorantraniliprole are compounded in the proportion range of 50: 1-1: 50, and the co-toxicity coefficient CTC measured by the combined toxicity of the rice stem borers is larger than 140, so that the synergistic effect is obvious. Particularly, in the range of the mixture ratio of 10: 1-1: 20, the CTC is more than 180, and the synergistic effect is obvious.
Efficacy example 2: indoor combined toxicity determination method for beet noctuids
The toxicity of beet armyworm is determined by cabbage leaf soaking method. Immersing cabbage leaf disks (diameter 2cm) with the same size in test liquid medicines with different mass concentrations for 15s, and drying. Placing into culture dish (diameter 9cm) filled with absorbent paper, inoculating 2-year-old metaphase larva (15 heads/dish), and placing into observation chamber, wherein each dish contains 10 pieces. The control was treated with clear water. Treatment was repeated 4 times per concentration and the results were investigated after 4 days.
TABLE 2 indoor toxicity assay results for beet armyworm
Wherein: a is emamectin benzoate B2a benzoate, and B is flubendiamide.
The results of the combined toxicity test in the table 2 show that the emamectin benzoate B2a and the flubendiamide are compounded in the proportion range of 50: 1-1: 50, and the co-toxicity coefficient CTC measured by the combined toxicity of the rice stem borers is larger than 140, so that the synergistic effect is obvious. Particularly, in the range of the mixture ratio of 5: 1-1: 10, the CTC is more than 180, and the synergistic effect is obvious.
Efficacy example 3: indoor combined toxicity determination of plutella xylostella
The toxicity of the diamondback moth is measured by a cauliflower leaf soaking method. And (3) soaking cauliflower leaf disks (the diameter is 2cm) with the same size in test liquid medicines with different mass concentrations for 15s, and drying. Placing into culture dish (diameter 9cm) filled with absorbent paper, inoculating 2-year-old metaphase larva (15 heads/dish), and placing into observation chamber, wherein each dish contains 10 pieces. The control was treated with clear water. Treatment was repeated 4 times per concentration and the results were investigated after 48 h.
TABLE 3 indoor toxicity assay results for diamondback moth
Wherein: a is emamectin benzoate B2a benzoate, and B is cyantraniliprole.
The results of the combined toxicity test in the table 3 show that the combined toxicity test of the emamectin benzoate B2a and the cyantraniliprole in the ratio range of 50: 1-1: 50 shows that the combined toxicity test of the diamondback moth has the co-toxicity coefficient CTC of more than 140 and has obvious synergistic effect. Particularly, in the range of the mixture ratio of 5: 1-1: 20, the CTC is more than 180, and the synergistic effect is obvious.
Efficacy example 4: acute toxicity test for crayfish
Diluting different preparation products into 500 times of liquid, 2500 times of liquid, 5000 times of liquid and 10000 times of liquid respectively, putting 400 ml of liquid into a bucket, screening crayfish with consistent vitality into the liquid medicines for different treatments, putting 50 crayfish into each bucket, observing the survival state of the crayfish at 24h, 48h and 72h respectively, and calculating the death rate according to the following formula. Each treatment was repeated 3 times, using a clear water treatment as a control. The test water is lake water in Hubei Jingzhou region, and is used after sand filtration, precipitation, disinfection and full aeration.
TABLE 4 acute toxicity test results for crayfish
As can be seen from Table 4, the formulation examples 1, 2 and 4, in which no Bifidobacterium was added, had a mortality rate of about 100% for lobsters 72h in the diluted solution; after different dosages of bifidobacteria are added into the comparative examples 1-6, the mortality rate of the diluent with different times to lobsters for 72h is less than 5 percent, which is close to the natural mortality rate of the lobsters. The results show that the emamectin benzoate B2a is safe for crayfish after the bifidobacterium is added into the chlorantraniliprole suspending agent.
Meanwhile, comparative example 7 the mortality of lobsters still exceeded 90% after the addition of bifidobacteria to a single dose of 5% emamectin benzoate B2a suspension. The result shows that the bifidobacterium can only play the effect of a lobster antidote when the emamectin benzoate B2a and chlorantraniliprole coexist.
Third, field drug effect test
In order to better verify the practical application effect of the pesticide composition, the preparation of the embodiment of the invention is subjected to a pesticide effect test for preventing and treating rice stem borer.
The test site is the shrimp rice field in the Xincun river at Liton city, Hubei Jingzhou, and the experimental crop is rice, so the growth vigor is good, and the irrigation and drainage are convenient. When the pesticide is applied, rice is in the early tillering stage, has more withered sheaths, and mainly has 3-4 years old of worm age. The rate of sheath withering in the field is 18.6%. When the pesticide is applied, Chilo suppressalis is mainly used for 3-4 years, the resistance is high, more sheath withering is caused in the field, the pesticide application tool is an electric sprayer, the method is conventional spraying, and the water consumption is 15kg per 667 square meter.
And 5 points are selected for each treatment, 50 lobsters are fished out from each point in the rice field, and are tied with the gauze, and the gauze is fixed in the rice field. The insecticidal effect and the survival state of the lobsters are respectively investigated 5 days after the drug administration, and the death rate is calculated. The results of the tests are shown in Table 5 below.
TABLE 5 shrimp Paddy field test results
Wherein: a is emamectin benzoate B2a benzoate, and B is chlorantraniliprole.
As shown in Table 5, compared with a single agent, the compound of emamectin benzoate B2a and chlorantraniliprole has the advantages that the control effect on rice stem borers is obviously improved, the correction control effect exceeds 90%, and the control effect obviously exceeds that of the single agent. The compound use of the emamectin benzoate B2a and chlorantraniliprole is proved to have obvious synergistic effect on rice stem borer.
However, the toxicity of the compound preparation of emamectin benzoate B2a and chlorantraniliprole to lobsters is high, and the death rate of the lobsters is almost 100% after 5 days of administration. After different contents of bifidobacteria are added into the compound suspending agent of emamectin benzoate B2a and chlorantraniliprole, the death rate of the lobsters is less than 2 percent and is close to the natural death rate of the lobsters of 0.5 percent. Meanwhile, when the mass ratio of the bifidobacterium to the active ingredients in the preparation reaches 0.75 percent, although the death rate of the lobsters is close to the natural death rate, the correction and control effects of the preparation on the chilo suppressalis are reduced to 82.36 percent and 79.36 percent. Indicating that excessive bifidobacteria can inhibit the combined control effect of emamectin benzoate B2a and chlorantraniliprole.
The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. The invention is not described in detail in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (6)
1. An insecticidal composition for controlling lepidopteran pests, comprising: the composition comprises effective amounts of two effective components of a component A and a component B, wherein the component A is emamectin benzoate B2a benzoate, and the component B is chlorantraniliprole; the mass part ratio of the component A to the component B is 50: 1-1: 50; the effective components of the insecticidal composition are emamectin benzoate B2a benzoate and chlorantraniliprole, and the pesticide formulation is a suspending agent which contains bifidobacteria.
2. The pesticidal composition for controlling lepidopteran pests according to claim 1, characterized in that: the total mass of the component A and the component B in the pesticide is 1-80%.
3. The pesticidal composition for controlling lepidopteran pests according to claim 1, characterized in that: the pesticide composition can be prepared into water suspending agent and water dispersible granule.
4. A pesticidal composition for controlling lepidopteran pests according to any one of claims 1-3, characterized in that: the insecticidal composition is used for preventing and controlling lepidoptera pests.
5. The pesticidal composition for controlling lepidopteran pests according to claim 1, characterized in that: the mass ratio of the bifidobacteria to the effective components is not more than 0.5%.
6. The pesticidal composition for controlling lepidopteran pests according to claim 1, characterized in that: the insecticidal composition is used for preventing and controlling lepidoptera pests in a shrimp paddy field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911023560.8A CN110896955B (en) | 2019-10-25 | 2019-10-25 | Insecticidal composition for preventing and treating lepidoptera pests |
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| CN101548680A (en) * | 2009-04-23 | 2009-10-07 | 惠州市中迅化工有限公司 | Pesticidal composition containing emamectin benzoate and chlorantraniliprole |
| CN101554170A (en) * | 2009-05-15 | 2009-10-14 | 陕西标正作物科学有限公司 | Chlorantraniliprole and emamectin benzoate insecticidal composition |
| CN101669488A (en) * | 2009-09-29 | 2010-03-17 | 山东京博控股发展有限公司 | Binary complex pesticide composition containing chlorantraniliprole |
| CN101700025A (en) * | 2009-09-17 | 2010-05-05 | 张志高 | Synergistic insecticidal composition |
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| CN101548680A (en) * | 2009-04-23 | 2009-10-07 | 惠州市中迅化工有限公司 | Pesticidal composition containing emamectin benzoate and chlorantraniliprole |
| CN101554170A (en) * | 2009-05-15 | 2009-10-14 | 陕西标正作物科学有限公司 | Chlorantraniliprole and emamectin benzoate insecticidal composition |
| CN101700025A (en) * | 2009-09-17 | 2010-05-05 | 张志高 | Synergistic insecticidal composition |
| CN101669488A (en) * | 2009-09-29 | 2010-03-17 | 山东京博控股发展有限公司 | Binary complex pesticide composition containing chlorantraniliprole |
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